Rocket.Chat.ReactNative/app/containers/message/Video.js

import React, { useContext } from 'react';
import PropTypes from 'prop-types';
import { StyleSheet } from 'react-native';
import { dequal } from 'dequal';

import Touchable from './Touchable';
import Markdown from '../markdown';
import openLink from '../../utils/openLink';
import { isIOS } from '../../utils/deviceInfo';
import { CustomIcon } from '../../lib/Icons';
import { formatAttachmentUrl } from '../../lib/utils';
import { themes } from '../../constants/colors';
import MessageContext from './Context';

const SUPPORTED_TYPES = ['video/quicktime', 'video/mp4', ...(isIOS ? [] : ['video/3gp', 'video/mkv'])];
const isTypeSupported = type => SUPPORTED_TYPES.indexOf(type) !== -1;

const styles = StyleSheet.create({
	button: {
		flex: 1,
		borderRadius: 4,
		height: 150,
		marginBottom: 6,
		alignItems: 'center',
		justifyContent: 'center'
	}
});

const Video = React.memo(({
	file, showAttachment, getCustomEmoji, theme
}) => {
	const { baseUrl, user } = useContext(MessageContext);
	if (!baseUrl) {
		return null;
	}
	const onPress = () => {
		if (isTypeSupported(file.video_type)) {
			return showAttachment(file);
		}
		const uri = formatAttachmentUrl(file.video_url, user.id, user.token, baseUrl);
		openLink(uri, theme);
	};

	return (
		<>
			<Touchable
				onPress={onPress}
				style={[styles.button, { backgroundColor: themes[theme].videoBackground }]}
				background={Touchable.Ripple(themes[theme].bannerBackground)}
			>
				<CustomIcon
					name='play-filled'
					size={54}
					color={themes[theme].buttonText}
				/>
			</Touchable>
			<Markdown msg={file.description} baseUrl={baseUrl} username={user.username} getCustomEmoji={getCustomEmoji} theme={theme} />
		</>
	);
}, (prevProps, nextProps) => dequal(prevProps.file, nextProps.file) && prevProps.theme === nextProps.theme);

Video.propTypes = {
	file: PropTypes.object,
	showAttachment: PropTypes.func,
	getCustomEmoji: PropTypes.func,
	theme: PropTypes.string
};

export default Video;